Cryptography is today one of the most popular applications of computer science, and we usually think of it as a modern way to hide a transaction behind a complex, machine-generated code. Cryptograms however have been used since the antiquity, to exchange e.g.
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Hiding science behind literature
Walkers in the dark, or how to avoid the streetlight effect
A few days ago, I pulled out of the bookshelf a book. I sometimes like to randomly go back to old readings, to dig up a citation or a particular image that I remember, or maybe just to check if
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